What is a functional block? o o In the design of digital circuits certain operations are present in many designs. The specific logic circuits for that function can be formed into a functional block that can be reused many times. In the past (ancient times ) many of these were manufactured on integrated circuits, small-scale(SSI) and medium-scale(MSI). 9/15/09 - L 14 Functional Blocks Copyright 2009 - Joanne De. Groat, ECE, OSU 3